We asked the experts for their best tips.

The Duchess of Cambridge attended the National Portrait Gallery Gala on Tuesday evening, along with Alexa Chung, Kate Moss and Victoria Beckham.

Costume designer Julian Day walks us through her character's looks, from a salty '50s diner waitress to an underground club owner with a taste for Agent Provocateur sets.

Plus, will Michael Kors Holdings and Tapestry Inc.'s desire to grow result in a handbags race?

"I try to break down stereotypes, to change the way the industry views women, to create more opportunities for women of color and to change the voice that we have in the business."

See our roundup of the most memorable hair and makeup from the evening.

Plus, Jourdan Dunn reveals her athleisure collection with Missguided.

Rihanna in a beret! Céline Dion with half a wing-capelet!

Olivia Palermo and Jourdan Dunn wore some standout outfits, too.

Actually, she's the perfect choice.

The new capsule collection has already produced a red carpet moment.

Plus, Carson Street Clothiers is closing its doors.

Plus, Anwar Hadid talks about his first photo shoot and attending college.

You're welcome.

Plus, a Rihanna documentary is in the works

From Amber Valetta and Jourdan Dunn to Ashley Graham and Hari Nef, models of all shapes, ages and races walked the runway.

The designer forwent a runway show for a theatrical presentation at her Meatpacking headquarters starring Kendall Jenner, Gigi Hadid, Karlie Kloss and more Insta-girls.

One word: Amal.

Plus, Levi's designs a special collection to benefit the Harvey Milk Foundation.

From Amal Clooney to Lily James, a dramatic femininity pervaded the red carpets.

You can feel better about ogling because proceeds go towards fighting breast cancer.

For the first time, a single designer took home the night's two top honors.

Meet the man Cara Delevingne once flew across the world for a midnight tattoo session.

Whatever the clothes lacked in quality, they did not lack in effect.